Electric heater.



1,143,579. Patented June 15, 1915.

,IZ/W 2,5565.:

UNITED STATES PATENT OFFICE.

HARRY W. DENHARD, 0F SAN FRANCISCO,

cALiFoRNIA, nssIGfNoR fro THE c'UfrLm HAMMER MFG. CO., OF MILWAUKEE.WISCONSIN, A CORPORATION 0F WISCONSIN.

ELECTRIC iiiiafinn;`

Specification of Letters Patent.

Patented June y15, 1915.

Application filed October 31, 1911. Serial No. 657,813;

Another object is to provide an' improved.

heater in which avpluralityy .of heating coils, adapted for differentheating purposes,"arev automatically controlled by an object to be lheated.

A further object is to provide an improved curling iron` and greasepaint heater.

Other objects and advantages of the invention will hereinafter' appear.

he accompanying drawings illustrate an `embodiment ci' the invention.

In the views of these drawings: Figure l lshows a central section viewthrough a heater. Fig'. 2 shovs a sectional view on line 2 2 of vFig. 1.Fig. 3 shows an end' view of the heater'.lv Fig. 4 shows a diagram ofthe circuit connections for the same.

For purposes of illust-ration, I have shown a curling-iron heaterarranged beneathl a grease paint heater between en d members of suitableframe. A. switch mechanism con` trolling the circuit connections of thesame is located on a plate beneath the curling-iron heater and betweenthe end members. In the construction shown the end members and thebottom plate are carried on the side of a base or panel', as shown inFig. 3, Yso that this panel may be readily attached to any suitablesurface, or, if' desired, the device may be portable'and set against anysurface without attaching the same. The base 1 is preferably'formed of asuitable insulating material and carries a bot-l tom plate 2 clampedl toit and extending from it at right angles.'V 'This bottom'plate 2 ispreferably formed oi insulating material and provided with end members3,'preteifably formed o? cast metal, which in turn.

may be attached .to the base l. Ina preferred form `the curlingfixui'iheater is constructed substantially inthe. same manner `asniy(io-pending application, Serial No.-

material 6, of any desired type, being woundupon the sheet of insulationand inclosed in a sealedv heat-retaining chamber 7. As in the* previousconstruction, the door S is arranged to close the openings in one oftheend members opposite the open end of the sleeve il, and this door isprovided with an extension 9 arranged to transmit the movement of thedooi' to the switch mechanism.

The grease paint heater is 'preferably arranged above the curling-ironheater and includes aheating element preferably of a flat type, whereina resistance materia-l 10 is preferably inclosed between two or moresheets of insulation 11, as illustrated in F ig. l.

The heating unit is preferably located with-V greasediolding chambers 13is preferably snugly fitted upon the ends of the frameand attached tothe saine by means of suitable screws or other devices 14e By thearrange-` ment of the grease paint heater directly beneath the greasepan 12, I am able to provide a heater wherein the heat is directlyconducted to this'pan. Further, by the arrangement oii the grease panupon the top of the device it is very conveniently located, and

. is heated not only by the heat developed by its unit but also thatdeveloped by the lieat ing unit for the curlingdron.

The switch mechanism, which is operated upon movement of the door 8, isconnected with the extension 9 on the door so that it is operated whenthe'door is either opened or closed. In a preferred forni, links 15 areattached to the lower end of the extension 9 and are so arranged thatwhen the door is`moved about its pivot 1G a movable contact member 17 ona shaft 18 is thrown about `Contact members 19, 20,21 and 22 arepreferably fixed to the 'top surface of the bottom plate 2 by meansl ofsuitable bolts 24 and are preferably provided with downwardly extendingportions 25 which are preferably forced into the .material of the losbase to hold the contact members securely in position. rEhe shaft orspindle 18, which carries the movable contact member 17 eirtends througha suitable opening 26 in the bottom .plate and an Aopening of smallerdiameter ini a metal plate'27 carried on the upper surface of saidbottom plate and attached tothe saine by means of 'screws or othersuitable devices 28. lThe upperend ot the shaft 18 is squared as shownvin Fig. 2 so that the contact 17 moves with it. preferred form, a spiralspring Q9 encircles lthe lower end of the spindle i8, having one endfixed in a suitable opening in the plate 27 and the other end fixed in asuitable tap or sleeve-30 carried by the spindle. lt will thus beseen"that when a curling iron or .other object is Iinserted in theheater the door is openedand the switch is actuated af'ainst the bias ofserine 29. When the object. is removed the door and the switch areautomatically and quickly returned to their normal-position bythespring.

In Fig. 4 l. have illustrated diagrammatically one form of circuitconnections' l tion 'of Vthe switch mechanism is shown in Fig. e withthe movable Contact member 17 bridging the contactsQO, 22. ln thisposition the grease paint heater is in circuit and the curling-ironheater is cut out ot circuit.

When the 'curling-ir0n or other object to be heated is inserted in theheating chamber within the coil 6, the door 8 is opened, throwing-theinovablecontact 17 to break the circuit at the contacts 20, 22 and` tomakethe circuit across the contacts .19 and Q1. The curling-iron heateris then iii circuit and the grease; paint heater is cut out. Due to thefact thatthe curling-iron heater consumes a larger amount of energy thanthe grease paint heater,'suihciei1t heat will be obtained for theoperationl ot both heaters when the curling-iron heater is in use,without the necessity of connecting the print heater in circuit. Thus aver coi .arrangement is provided wh desiring to use the grease pai maydo so at any time by throwing a suitable line switchl oi' any desiredconstruction. Wvhen, howeveig'it is desired to use the curling ironheater and at the Sametime use the grease paint heater, the circuitiorthe curling-iron is automatically closed upon insertion of thecurling-iron without the necessity of operating any distinct switch,andat the saine time, the grease paint contained. vin

incasso the pans is kept at the proper temperature without reducing theamount of venergy being supplied to the curling iron heater. When thecurling iron has been suiiiciently heated, it is Withdrawn i'roin theheater and the circuit oi: the curling iron heater is immediately brokenautomatically, the spring return Jfor the switch mechanism tendingl tokeep the door closed and on its return cutting in the grease vpaintheater. Of course, if the grease paint has reachedthe proper temperaturevand it is only desired to use the same for a short time thereafter,vthe line switch 31 may be opened; the residual heat in the device beingsuiiicient to maintain the greasevpaint at the proper'temperature for ashort time.

ln a preferred form a projection or ledge is provided upon the forwardedge of the heater casing which may serve asI a receptacle for thecurling iron when it is not in use. Further, it desired, the grease pans10 maybe removable, lso that they will snap into position' upon the topof the frame. It is obvious that other forms of base member than thatherein shown may be provi ded and that the base may, if desired, bearranged beneath the bottom plate 2 so that the device may be entirelyportable and stand upon the base. y l

.By my'iinproved construction l have provided an improved heater whichmay 'e made up into a very compact form so that it occupies but littlespace upon a dressingtable. Further, the'arrangement is such that thegrease paint heater is not inthe way ot the person using the curling`iron heater. By my improved method of control, the heating device maybecut out ot circuit when desired, or the curling iron heater or greasepaint heater may be in circuit at different times. Further, while whenthe larger amount of energy required for the curling iron heater isneeded, the grease paint heater is out ouuby my improved arrangement thegrease paint is still kept at the proper temperature and. consistency.My improved heater is so constructed and arranged that the parts of thesame are eft'ectually insulated from each other so that there is nodanger of short-circuiting or overheating, and the device is verysafe'in operation. vThe device may further be made such a form that itmay readily be .d in a trunk' and carried with the user. desired, theterminals for the device may be connected to an ordinary socket plug sothat all that it is necessaryio do is to placev the plug in circuit whenit is desired to use the hea ein By the use of the spring pressed switchl am able to provide a switch which 'breaks the circuit quickly and witha miniprovide automatic means of closing theA CIJ ' a heating coilsurrounding said chamber,

door and conserving the heat within the device.Y Further, b y myiinproved construclily carried about. Further, the device is of such asimple construction that it may .be readily manufactured at smallexpense.

While I have -in this application specifically described one form whichmy invention may assume in practice, I do not Wish to be limited to thisspecific form, chosen for purposes of illustration, butiwish vto coverWithin the scope of this application `all of those forms of my inventionfalling Within its spirit.

What I claim as new1 and desire by Letters Patent is as follows 1. In anelectric heating device, aj plurality of heating coils adapted' to heata plurality of. objects and means actuated by the placement of an objectto be heated yWithin the heating Lone for changing the .current t0secure ioivl in said coils.

In an electric heating device, a frame having a heatingchamber formedtherein, a door .for said chamber, a plurality of heating coils adjacentsaid chamber ladapted to heat a pluralityof objects, and means actuatedupon movement of said door for changing the circuitV connections of saidcoils.

3. In an electric heating device, a frame .having a heating chamberformed therein, a

heating coil for said chamber', a second heat- ;g' coil carried in saidframe, a door forlfsaid'heating chamber, and means actuated uponmovement of said door for cutting in the said first mentioned coil andcutting out the said second mentioned heating coil.

i. In an electric heating device, al casing having a' heatingclianiber'formed therein,v

a vheating coi-l for said chamber, 4a second heating coil carriedby-said casing and.

means actuated' by the insertion of an object 'to be heated in saidheating chamber for cutting in the'heating coil for said chamber andcuttingout the other heating coil.

5. In an electric heating device, a casing having a heating chamberformedtherein,

.heating coil for said chamber and changing the circuit connections ofthe other coil. (3. In :in electric heating device, a frame,

a sleeve forming a heating chamber carried in said frame, a heating coilfor said chainber, a pan carried by said frame, a heating coil for saidpan and means actuated upon the insertion of an object to -bc heated inlsleeve for cutting inthe heating coil,.-

said u its.

ior the same and changing the circuit connections of the other heatingcoil. l

7. In an electi'ic heating device, a frame, a sleeve carried thereby. aheating coil wound about said sleeve and insulated therefrom, a pancarriedby said frame ,above said coil, a heating'coil for said pan'betiveen saidpan and said first mentionedcoil and means actuated uponthe insertion ofan object to be heated in said sleeve for supplying thecurrent to its ycoil and cutting oill the current supplied' to theheating .coil for said 'pan'.il v-f l f 8. In an electric heatingdevice, a frame, a hollow heating unit supported therein, means forsupporting an object to be heated carried by said frame, asecond heatingunit vlocated between said means and said holsoy 9.. In an electricheating device, va frame,

a sleeve carried thereby, a cylindrical heating coil surrounding saidsleeve and insulated therefrom, a pan carried by saidl frame above saidcoil, a second coil between isaid pan and said coil and means actuatedupon an insertion of an object to be heated in said sleeve for changingthe .circuit connections of said coils.

10. In an electric heating device,-a frame, a heating vunit inclosed inasealed'chamber therein, a secondV heating unitV carried by said frameand means actuated'by anobject to be heated .by one of said units forchanging the circuit connections of said 11.l In an electric heatingdevice, a frame, a heating unit inclosed in a sealed chamber therein,`an object to be. heated carried` by said frame, a second heating unitadjacent said object and means actuated by another object to be heatedby one of said units for changing the circuit connections of said units.

12. In an electric heating device, a frame, a heating unit carriedthereby and 1nclosedin a sealed chamber, a second unit mounted in saidframe, each of said units being arranged to heat diiferent objects and aswitch mechanism actuated by a lmovement of an object to be heated byone of said units for changing the circuit connections of one of 13. Inan lelectric heating device, a frame,

chamber, a ,second heating unit mounted in 'said frame adjacent saidchamber, a support for an object to be heated mounted adjacent said lastmentioned unit and means including'. a spring pressed contact memberarranged to changey the circuit connections of .a sleeve carriedtherebj, a heating coil sur- `rounding said sleeve and inclosed'ina-sealed ment oi said closing means.

said Vheating unit upon the I'no'vement-or` an object to be heated byone of said units.

vla. In an electric heating device; a vcasing having a ledge formedthereon, 'a transf versely extending plate connecting they end membersof said casing,l a hollow heating unit carried betvvee'n thefend membersof said 'casing and inclosed in a sealed chamber, a iiat heating unitcarried in said cas-` ingabove said iirst mentionedunit, a pan mountedon said4 casing adjacent said at unit, a door normally closing one ofthe ends of sai hollow heating unit, 'and 'a switch mechanism actuatedupon movement of said door and mounted upon said bottom plate forchanging the circuit connections of having an opening therein, aplurality of vheating coils adjacent said opening, means for closingsaid opening operable upon movement of an'object to be heated, ainoscillating spring-pressed contact member `carried by said frame andmovable in a plane parallel with the plane of said heating coils, andmeans connecting said contact n member and said closing means serving tooperate said contact member upon move- 17. in an electric heating aframe mounted thereon, a heating unit extending longitudinally `of saidframe and having an opening adapted to rceive' an device, a panel, v

object to be heated, a heating unit carried by said frame 'adjacentsaidfirst mentioned unit, a pan 'carried by said frame adjacent said unit,*and means operated upon insertion or-reinoval of an object to be heatedby said-'istme'ntioned coil I'for changing the'. circuit connections ofsaid coils.

. -182 lIn an electric heating device, araine having end members, 'aheating unit .carried between said end members and communicating with anopening in'one of the salme,"a secondv heating lunit carried by saidframe, a

lheating pan carried by 'saidframe adjacent saidv secondv unit, meansoperable upon movement oi an object to fbe heated 'bysaid first unit forchanging vthe circuit connections of said units, and means carriedbysaid-frame adaptedto'support said object to bel heated by said iirstmentioned unit -when' 'thel latter is not in use. 'f'.

19. In` an electric heating device, a panel, a frame carried thereon andhaving endV members spaced apart, an 'insulating base connecting thebottoms of said endmembers, a cylindricalA heating unit carried Vbetweensaid end members and communicating-With an opening in one of the same, asecond heating unit carried between said end meinbers above said firstmentioned unit, a grease pan carried by said end members adjacentV saidsecond mentioned unit, and means cariried on said insulating base andoperable 7,5

upon movement of an object to be heated by said first mentioned unit-for changing the circuit connections of said units.

Iiiivitness4 whereof, I have hereunto sub" scribed my name in v.thepresence of tivo-8D` Witnesses.

HARRY W. DENHARD,l

y Witnesses:

' H. L. ROCKWELL,

GEO. B. JoNns.

